.b-firstScreen {
    margin: 0 auto;
    position: relative;
    display: flex;
    width: 1198px;
    height: 242px;
    justify-content: space-between;
    top: -20px;
}

.rcmd-box {
    display: flex;
    width: 638px;
    height: 242px;
    flex-wrap: wrap;
    justify-content: space-between;
    /* background-color: aqua; */
    /* margin-left: 10px; */
    align-content: space-between;
}

.rcmd-box .video-card {
    position: relative;
    width: 206px;
    height: 116px;
    margin-bottom: 10px;
}

.rcmd-box .video-card .info-box {
    position: relative;
    /* overflow: hidden; */
    /* background-image: url(); */
    background-repeat: no-repeat;
    background-position: 50%;
    width: 100%;
    height: 100%;
    border-radius: 2px;

}

.info-box a img {
    width: 100%;
    height: 100%;

}

.info-box .info {
    /* display: none; */
    position: absolute;
    top: 116px;
    left: 0px;
    width: 206px;
    height: 0px;
    transition:.5s;
    text-align: left;
}

.info-box:hover .info {
    display:block;
    width: 206px;
    height: 116px;
    top: 0px;
    border-radius: 2px;
    background: rgb(0, 0, 0, 0.7);
}
.info-box:hover .info .title {
    display:block;
    top: 40px;
}
.info-box:hover .info .up {
    display:block;
}
.info-box:hover .info .play {
    display:block;
}
.info-box .info .title {
    /* display: none; */
    position: absolute;
    word-break: break-all;
    /* 换行 */
    top: -25px;
    left: 0px;
    color: #fff;
    font-size: 14px;
    z-index: 10;
    /* opacity: 1; */
    margin: 7px;
}

.info-box .info .up {
    display: none;
    position: absolute;
    top: 65px;
    left: 0px;
    color: #fff;
    font-size: 12px;
    /* opacity: 1; */
    margin: 7px;
}

.info-box .info .play {
    display: none;
    position: absolute;
    top: 90px;
    left: 0px;
    color: #fff;
    font-size: 12px;
    margin: 7px;
}

                        /* 换一换 */
.change-btn{
    position: absolute;
    top: 0;
    right: -36px;
    width: 26px;
    height: 70px;
    border: 1px solid silver;
    border-radius: 2px;
    color: #505050;
    display: flex;
    flex-direction: column;
    padding-top: 7px;
    line-height: 14px;
    margin-left: 5px;
    /* box-shadow: 0 1px 6px 2px #e7e7e7; */


} 
.change-btn span{
    margin: 0 auto;
    width: 12px;   
    font-size: 12px;
}
        /* 字体图标 */
.icon {
    width: 15px;
    height: 15px;
    /* margin-left: 2px;
    margin-bottom: 5px; */
    margin:0 auto;
    margin-bottom: 5px;
    vertical-align: -0.7em;
    fill: currentColor;
    overflow: hidden;
  }                     